點擊listview item 改變其背景

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:state_selected="false" android:drawable="@color/colorPrimary"></item>
    <item android:state_selected="true" android:drawable="@color/colorAccent"></item>

</selector>

<ListView
    android:id="@+id/lv"
    android:listSelector="@drawable/choose"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"/>